[usually passive]fleck something (with something)to cover or mark something with small areas of a particular colour or with small pieces of somethingThe fabric was red, flecked with gold.His hair was flecked with paint.Mud and rain flecked the car windows.Word Originlate Middle English (as a verb): perhaps from Old Norseflekkr (noun), flekka (verb), or from Middle Low German, Middle Dutchvlecke.